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{{PatentInfo |Inventor=Sydney E. Longmaid |Assignee=The Esterbrook Pen Company |Country=US |ApplicationNum=519954 |ApplicationDate=1944-01-27 |PatentNum=2430023 |PatentDate=1947-11-04 |PriorityDate=1944-01-27 |Titolo=Writing implement |Marca=Esterbrook...
{{PatentInfo
|Inventor=Sydney E. Longmaid
|Assignee=The Esterbrook Pen Company
|Country=US
|ApplicationNum=519954
|ApplicationDate=1944-01-27
|PatentNum=2430023
|PatentDate=1947-11-04
|PriorityDate=1944-01-27
|Titolo=Writing implement
|Marca=Esterbrook
|Descrizione=Pennino economico
}}
==Informazioni==
Brevetto per un pennino economico.

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